Home / 12,578.97-18,867.29-4,258.03

Finding the Fourth Proportional to 12,578.97, 18,867.29 and 4,258.03

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Solution

The fourth proportional to 12,578.97, 18,867.29 and 4,258.03 is: 6,386.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.97 : 18,867.29 = 4,258.03 : x
  2. Step 2: Convert to fraction form
    12,578.97/18,867.29 = 4,258.03/x
  3. Step 3: Cross multiply
    12,578.97x = 18,867.29 × 4,258.03
  4. Step 4: Simplify right side
    12,578.97x = 80,337,521.07
  5. Step 5: Solve for x
    x = 80,337,521.07/12,578.97
  6. Step 6: Final answer
    x = 6,386.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.